Wednesday, March 29, 2017

SUNSPOT IN H-ALPHA Taken by jean-pierre brahic on March 29, 2017 @ Uzès ( France)






AR2644 ( 2017.03.29) Réfractor Special H-Alpha 230mm F/D 11.2 , Ech : 0.14/Pix PST MOD 1A° , Basler ACA1920-155 (155fps) GENIKA 2.13.2,Seeing ( 6/10 )

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